Apparatus for adjusting and holding well-drilling bits



Oct. 19,1926; 1,603,421 J. M. SHAFFER APPARATUS FOR ADJUSTING AND HOLDING WELL DRILLING BITS Original Filed Augus 1, 1925 2 Sheets-Sheet, 1

Oct. 19 1926.

J. M. SHAFFER APPARATUS FOR ADJUSTING AND HOLDING WELL DRILLING BITS Original Filed August '7, 1925 2 SheetsSheet 2 Patented Get. 19, 1926.

EJNETED STATES 1.663.421 PATENT @FFEQE.

JAMES M. SHAFFER, OE FORT WORTH, TEXAS.

APPARATUS FOR ADJUSTING AND HOLDING WELL-DRILLING BITS.

Application filed August 7, 1925, Serial No. 48,726. Renewed September 13, 1926.

My invention relates to apparatus for handling well drilling bits and tools and the like; and the object is to provide certain simple devices for engaging and handling well drilling bits and other tools and to provide apparatus which will be strong and which will. operate with required accuracy and positivenessand which is capable of quick adjustments and which will hold the tools from slipping. Other objects and advantages will be fully explained in the following description and the invention will be more particularly pointed out in the claims.

Reference is bad to the accompanying drawings which form a part of this application.

Fig. 1 is a plan View of the toolholder, showing in dotted outline a drill bit.

Fig. 2 is a side elevation of the same, showing the manner of attaching the apparatus to a crane.

Fig. 3 is an edge view of the same.

Fig. 4: is an enlarged broken view, showing the bearing of one'of the adjusting blocks, the nut and the swivel being omitted.

Fig. 5 is an enlarged sectional view of one of the tool holders.

Fig. 6 is a face view of the same, showing the corrugations for engaging the tools.

Fig. 7 is an enlarged sectional view of the bearing of the tool holder and the means for adjusting the tool.

Similar characters of reference are used to indicate the same parts throughout the several views.

This invention includes a quadrangular frame composed of bearing members 1 and 2 and adjusting members which are comand 6.

posed of co-operating members 3 and 4, 5 The members 3 and 4 and 5 and 6 have corrugated interlocked faces 7 for adjusting purposes. Bolts 8 and nuts 9 hold the member 3 and 4 and 5 and 6 interlocked. These members 3 and 1 and 5 and 6 have slots 10 for permitting adjustments. without removing the bolts entirely. The nuts 9 are unscrewed sufficiently to permit the points of the corrugations 7 to pass each other. The proper adjustment is made and then the nuts are tightened. To prevent outward movement of the bearing member 2, the member 4: is provided with upstanding lugs 11 and downwardly projecting lugs 12 on both sides of the member 2. The object is to prevent endwise movement of the bearing member 2 after the tool is properly adjusted. For the same reason the member 3 is provided with upstanding lugs 13 and downwardly projecting lugs 14. The member 1 cannot be moved endwise of the apparatus after the adjustment is made and and the nuts 9 are tightened.

The lugs 11 and 12 are placed on the member 4: and the lugs 13 and 14 are placed onthe member 3 so that members 3 and at can be adjusted longitudinally relative to each other. The members 5 and 6 are not provided with such lugs because these members form the gate for inserting and removing tools from the apparatus. A bolt 15 and nut 16 are used at one corner to hold the member 6 in place the bolt 15 forming a hinge for swinging the members 5 and 6. An eye bolt 17 holds the member 5 and the member 1 in operative relation after the adjustment has been made. The ends of the members 1 and 2 are slot-ted so that members 3 and 4:, and 5 and 6 can be adjusted laterally and the members 1 and 2 are provided with pluralities of holes 18 for the bolts 15 and 19 for adjusting purposes.

Bearings 20 are mounted in the members 1 and 2 for the adjusting blocks 21 and the bearings 20 may be cast integral-with the members 1 and 2. The bearing members 20 have reduced portions to form supports or engaging members for the swivel connections 22. The tool or apparatus is suspended on a crane by a block 23 and chains 24 which engage the swivels 22.

The faces of the adjusting blocks 21 are provided with corrugations 26 to prevent the tools from slipping through the apparatus or gripping members. The faces may be simply serrated in any suitable manner to make secure the holdings of drill bits and other tools. The blocks 21 are adjusted through their bearing connections by means of eye or other bolts 27 which are threaded and operate through threaded portions of the bearings 20. The movement of the bearing or adjusting blocks 21 may be limited by set screws 28 which project into the annular grooves 29 in the adjusting blocks 21, these grooves being sufficiently wide to permit adjustments without moving the screws.

For inserting a tool or bit, the bolt 17 may be removed and the members 5 and 6 swung outwardly on the bolt 15. After the tool is brought within the frame, the mem;

bers 5 andfiwill beswung back into place and the boltli inserted. The swivel con;

nections 22 are necessary because the tools must be turned to horizontal pos tion to. be

dressed.

What I claim 1s, 1. A tool holder for Well operating tools comprising a. horizontal frame having'end bearing members, one fixed side member connecting said end members 111 operat1verelation, one movable side member operatlvely connected to said end members and forming a gate: for inserting and removing tools from said frame, and adjustable blocks-mounteddifferent longitudinal adjustments, and'tool' holding members carried-by said end'mem bers.

3'. A; tool: holder for well; operating tools comprising a horizontal frame having end bearingmembers and one-fixed. side member and one movable side member, said movable side member forming a gate for the frame, and 331d fixedfinember having upwardly and downwardly projecting lugs: for holding said end members atfixed adjustments, and tool holdingmembers carried by said frame.

4. A tool holder for well operating tools comprising a horizontal; frame having end bearing members and side members operatively connected to said endmembers, one side member being fixed and the other side member being movable and forming a gate,

each side member being composed of two members; corrugated on their adjacentfaces @Rdcapable of longitudinal adjustment relative to each foradjusting said frame, said side members having elongated slots and bolts pIOjected through said slots and through said members and provided with nuts for holdingsaid corrugated members in mesh at different points of adjustment, lugs on: said side members for preventing movement of'said end members after the end members have been adjustechand tool holdinq members .carried'by said'end members.

a".- A tool holder for well operating'tools comprising a-- horizontal frame having end members and side members adjustably connected thereto, said end members having be-ar'ii'igs, adjustable blocks mounted in said bearings and constituting tool holding members, and bolts for adjusting said'blocks.

6. A tool holder for well ope atingtools comprising a horizontal frame having end members and side members adjustably connected thereto, bearings carried by said end me nbers, tool holders mounted in said bearings, and screw bolts operatively connected with said bearingsfor adjusting said tool holders.

7-. A tool holderfor Well operating tools comprising a horizontal frame having end members and side members operatively connected thereto, said end members having bearings, tool gripping members mounted in said bearings, screw bolts operatively connected with said bearings for adjustingsaid gripping members, and swivel connections operatively connected with said bearings for connecting said tool holder to a crane.

In testimony whereof, I set my hand, this lthday-ofAugust, 1925.

' JAMES: M. SHAFF-ER. 

